Steam generator or water heater



June 20, 1933. H. J. FOUNTAIN STEAM GENERATOR OR WATER HEATER Filed May20; 1932 W 2, Sheets-Sheet l June 20, 1933. J ,FQUNTAIN 1,915,089

STEAM GENERATOR 0R WATER HEATER Filed May 20, 1932 2 Sheets-Sheet 2 6 7up I /0 k f'il 7 -fl-i Inn' Patented June 20, 1933 entree stares PATENT@FFEQE HOWARD JOHN FOUNTAIN, OF LONDON, ENGLAND, ASS-IGNOR TO THECLARKSON THIMBLE TUBE BOILER COMPANY LIMITED, OF LONDON, ENGLAND STEAMGENERATOR 01R VJ'ATER HEATER Application filed May 20, 1932, Serial No.612,471, and in Great Britain May 25, 1931.

This invention relates to steam generators or water heaters of the kindcomprising an annular water chamber with closed ended water tubes orthimbles or with loops 8Xi36I1Cling inwards into a heating space,through which the combustion gases from a burner are passed, the heatingspace being bounded on its inner side by a battle member.

In accordance with the present invention the baffle member which ishollow is fitted with an inlet pipe and an outlet pipe for the supplyand withdrawal from the battle of air or water so that the bafiie may beused as an air heater for heating the air to be supplied to the burner,which air is thus supplied in heated condition, or as a water heaterseparate from the steam generator or water heater proper.

The inlet and outlet pipes may be disposed concentrically one within theother and one of these pipes used to provide a central support for thebafie. A by-pass may be provided between the inlet pipe and the outletpipe in order to ensure that should the baffie become perforated, theair or water will be short circuited.

An embodiment of the invention is illustrated in the accompanyingdrawings in which Fig. 1 is a cross section through a steam generator orwater heater of the kind referred to having the baffle member arrangedas a water heater separate from the steam generator or water heaterproper or as an air heater in accordance with the invention. Fig. 2 is asection on the line XX of Fig. 1. Fig. 3 is a cross section through asteam generator similar to Fig. 1 in which, however, the inlet andoutlet pipes are disposed concentrically and a by-pass is providedbetween the inlet pipe and the outlet pipe.

In the drawings 1 indicates a steam generator or water heater of thekind comprising an annular water chamber 2 with closed ended water tubesor thimbles 3 radiating inwards into a heating space 4, through whichthe combustion gases from a burner or furnace or engine (not shown) butdisposed at the lower end of the generator are passed, the

heating space 4% being bounded on its inner ide by a hollow bathe member5.

In the embodiments shown the baffle member is provided with radiatingribs 6 and a conical bottom which is preferably reinforced and ofhematite iron. The interior of the baffle member 5/is connected with acold air or water inlet supply pipe 7 extend ing to near the bottom ofthe battle and has an outlet pipe 8 for the heated air or waterextending from the upper end of the baflie, the pipe 8 leading to thepoint of consumption or to the burner according as the battle is used asa water heater or an air heater.

The baifie member 5 is shown in Fig. 1 as suspended in the heatingchamber by means of a rod 9 in the usual way but may be suspended solelyfrom the air or water inlet and/or outlet pipes 7, 8. The inlet andoutlet pipes 7, 8 may as shown in Fig. 3 be disposed concentrically onewithin the other and one only of these pipes used to provide a centralsupport for the baiile.

A bypass 10, shown in Fig. 3, is preferably provided between the inletpipe 7 and the out let pipe 8 in order to ensure that should the bailie5 become perforated, the air or water will not pass direct through thebafile into the heating space.

The baiile member may consist of two cylinders one within the other, thecold air or water being supplied to the inner cylinder and passing outthe lower end of the latter into the outer cylinder from which it may betaken to the point of consumption or to the burner.

The battle may be of cylindrical form as shown or of conical or otherform.

I claim 1. A steam generator or water heater comprising an annular waterchamber presenting a flue for combustion gases, water tubes extendinginto said flue, a hollow baffie disposed within said flue said battlebeing closed at its end and being provided adjacent said end withradiating ribs and means whereby said baflie may be used as a heater,said means including an inlet pipe connection extending among saidradiating ribs for de livering to said hollow bailie the medium to beheated and an outlet pipe connection for removing the heated mediumtherefrom.

2. A steam generator or water heater comprising an annular water chamberpresenting a flue for combustion gases, water tubes extending into saidflue, a hollow baffle disposed within said flue said bafiie being closedat its end and being provided adjacent said end with radiating ribs andmeans whereby said bafile may be used as a heater, said means includingan inlet pipe connection extending among said radiating ribs fordelivering to said hollow baffle the medium to be heated and an outletpipe connection for removing the heated medium therefrom, saidconnections serving for supporting the battle member within said flue.

3. A steam generator or water heater comprising an annular water chamberpresenting a fine for combustion gases, water tubes extending into saidflue, a hollow bafiie disposed within said flue said baflie being closedat its end and being provided adjacent said end with radiating ribs andmeans whereby said bafile may be used as a heater, said means consistingof an inlet pipe connection eX- tending among'said radiating ribs fordelivering to said hollow baflle the medium to be heated and an outletpipe connection for removing the heated medium therefrom, said inlet andoutlet pipe connections being disposed one within the other.

4. A steam generator or water heater comprising an annular water chamberpresenting a flue for combustion gases, water tubes extending into saidflue, a hollow bafile disposed within said flue said baffle being closedat its end and being provided adjacent said end with radiating ribs,means whereby said battle may be used as a heater, said means consistingof an inlet pipe connection extending among said radiating ribs fordelivering to said hollow battle the medium to be heated and an outletpipe connection for removing the heated medium therefrom, and a bypassbetween the inlet and the outlet connections.

In testimony whereofI have signed my name to this specification.

HOWARD JOHN FOUNTAIN.

